Sand drier



r 1932- E, H. CAMPBELL I 1,887,799

SAND DRIER Filed June 17, 1931 3 Sheets-Sheet 1 Inveizior Efa. dam 0,662!

' BA'QMQOEIM.

fl Home y Nov. 15, 1932. E, CAMPBELL 1,887,799

SAND DRIER Filed June 17, 1951 s Sheets-Sheet 2 E. H. Cam 0176i! NOV. 15, 1932. CAMPBELL 1,887,799

SAND DRIER Filed June 1'7, 1951 3 Sheets-Sheet 5 Inventor E.//.C'ampbell Pate m vl 15, 1932 UNITED STATES.

nnwann HARMON CAMPBELL, or acorns, EST IRGINIA j .PATENT'TOFFICE SAND Darrin I Application flld .Tune v17,

My invention relates to the type of sand driers which comprise a stove, a drum spaced above the stove, central means between the stove and the drum for conducting products of combustion from the former to the latter, and auxiliary conduits for products of combustion grouped about said central means and interposed between and connecting the stove and the drum; and it consists in the pecul ar and advantageous drienof said type, hereinafter described and definitely claimed.

In the accompanying-drawings, forming part of this specification:

Figure 1 is a side elevation of a drier embodying the features of my invention. Figure 2 is a top plan view thereof. Figure 3 is a detail sectional view showing on of the nipples with a tube engaged thereon.

Figure 4 is a horizontal section taken substntially on the line 44 of Figure 1.

Figure 5 is a horizontal section taken sub stantially on the line 5-5 of Figure 6.

Figure 6 is an elevation of the improved structure with some of the tubes removed, and Figure 7 is an enlarged detail section taken substantially on the line 77 of Figure 1.

Referring to the drawings in detail it Will be seen that the numeral 5 denotes a stove with a hopper 6 mounted thereon in the usual well known manner. The upper portion of the stove has a dome 8 from the center of which rises a comparatively small bulbous like drum 9. A pipe 10 rises from the drum. The lower portion of the drum 9 is provided with an annular series of openings 11. A plurality of nipples 12 are projected from the intermediate portion 7 of the stove in an annular series and incline upwardly and out wardly. Numerals 14 denote outwardly curved tubes, the upper ends of which are extended through the openings 11 and the lower ends of which are telescoped over the nipples 12. r A fire box door 15 is provided in the lower portion of the stove below the annular series of nipples 12. The sand is placed in the hopper in the usual well known manner and the heat is more thoroughly distributed 50 through the sand because of the construction of the stove in combination with the tubes 14' and the drum 9.

nets of combustion will be retarded en route between the stove and the drum 9 with the result that a considerable portion of the products of combustion will be caused to pass through the tubes 14, and inconsequence heat will be radiated not only through the sand immediately adjacent to the stove but also throughthe sand surrounding and outwardly beyond the tubes 14'. It will also be noted that the upper and discharge end of the drum 9 is contracted which contributes to the re tarda'tion of the heated products of combustion en route to the uptake 10, and that by virtue of the outwardly curved form of the tubes 14 the length of the portions of the tubes 14 in the sand is increased and the radiating surfaceof the tubes 14 is further increased. It will further be noted that because of the specific construction disclosed the tubes 14 may be expeditiously and easily arranged in Working position relative to the stove and the drum 9 It is thought that the construction, utility and advantages of this invention will now be quite apparent to those skilled in this art without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification' sincein actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

1. A sand drier "comprising a hopper, a stove arranged in the central portion of the 100 hopper and having a dome-shaped upper end portion, a drum of comparatively small diameter communicating directly with the stove at the upper contracted end thereof and tapered upwardly to provide it with a reduced upper end, an uptake leading from said up per end of the drum, and outwardly curved tubes grouped about the stove and the drum I and having their ends connected with the ini teriors of the stove and drum, saidoutward- '"lyacurved tubes being spaced apart.

QTAsand drier comprising a hopp'er,"a stove arranged in the central portion otthe; hopper and havinga dome-shaped upper endand also having a series ofjnipplesextending outwardly from its intermediate'portion and V I group'edaboutisaid portion and communicat 1 r 4 ing" withthe interior of the stove, a drum of comparatively small diameter connected with u the upper central portion of the stove and 205 having an upwardly taperedupper portion "and also having-in its lowerportiona circular series ofapertures, and a plurality of outwardly curved tubes grouped about the stove and the drum in spaced relation and disposed over the said nipples and having their upper ends disposed in the said apertures of the drum. a

In testimony-whereof I afiix mysi-gnature. e

EDWARD HARMONQAMPBELL. 1 

